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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: MsrpInputStream.html 5 2014-12-10 22:27:01Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.dellroad.msrp.msg;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.io.EOFException;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.io.FilterInputStream;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.io.IOException;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.io.InputStream;<a name="line.13"></a>
<span class="sourceLineNo">014</span><a name="line.14"></a>
<span class="sourceLineNo">015</span>/**<a name="line.15"></a>
<span class="sourceLineNo">016</span> * Wraps an {@link InputStream} and parses MSRP messages from the underlying input.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>public class MsrpInputStream extends FilterInputStream {<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>    private final MsrpInputParser parser;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>    /**<a name="line.22"></a>
<span class="sourceLineNo">023</span>     * Constructor. Uses a {@link MsrpInputParser} with default parameters.<a name="line.23"></a>
<span class="sourceLineNo">024</span>     *<a name="line.24"></a>
<span class="sourceLineNo">025</span>     * @param input underlying input<a name="line.25"></a>
<span class="sourceLineNo">026</span>     * @throws IllegalArgumentException if {@code input} is null<a name="line.26"></a>
<span class="sourceLineNo">027</span>     */<a name="line.27"></a>
<span class="sourceLineNo">028</span>    public MsrpInputStream(InputStream input) {<a name="line.28"></a>
<span class="sourceLineNo">029</span>        this(input, new MsrpInputParser());<a name="line.29"></a>
<span class="sourceLineNo">030</span>    }<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>    /**<a name="line.32"></a>
<span class="sourceLineNo">033</span>     * Primary constructor.<a name="line.33"></a>
<span class="sourceLineNo">034</span>     *<a name="line.34"></a>
<span class="sourceLineNo">035</span>     * @param input underlying input<a name="line.35"></a>
<span class="sourceLineNo">036</span>     * @param parser parser<a name="line.36"></a>
<span class="sourceLineNo">037</span>     * @throws IllegalArgumentException if either parameter is null<a name="line.37"></a>
<span class="sourceLineNo">038</span>     */<a name="line.38"></a>
<span class="sourceLineNo">039</span>    public MsrpInputStream(InputStream input, MsrpInputParser parser) {<a name="line.39"></a>
<span class="sourceLineNo">040</span>        super(input);<a name="line.40"></a>
<span class="sourceLineNo">041</span>        if (input == null)<a name="line.41"></a>
<span class="sourceLineNo">042</span>            throw new IllegalArgumentException("null input");<a name="line.42"></a>
<span class="sourceLineNo">043</span>        if (parser == null)<a name="line.43"></a>
<span class="sourceLineNo">044</span>            throw new IllegalArgumentException("null parser");<a name="line.44"></a>
<span class="sourceLineNo">045</span>        this.parser = parser;<a name="line.45"></a>
<span class="sourceLineNo">046</span>    }<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>    /**<a name="line.48"></a>
<span class="sourceLineNo">049</span>     * Get the {@link MsrpInputParser} associated with this instance.<a name="line.49"></a>
<span class="sourceLineNo">050</span>     */<a name="line.50"></a>
<span class="sourceLineNo">051</span>    public MsrpInputParser getParser() {<a name="line.51"></a>
<span class="sourceLineNo">052</span>        return this.parser;<a name="line.52"></a>
<span class="sourceLineNo">053</span>    }<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
<span class="sourceLineNo">056</span>     * Read the next {@link MsrpMessage} from the underlying input stream.<a name="line.56"></a>
<span class="sourceLineNo">057</span>     *<a name="line.57"></a>
<span class="sourceLineNo">058</span>     * @return next message read, or null if EOF is detected<a name="line.58"></a>
<span class="sourceLineNo">059</span>     * @throws IOException if an I/O error occurs<a name="line.59"></a>
<span class="sourceLineNo">060</span>     * @throws ProtocolException if a protocol violation is detected<a name="line.60"></a>
<span class="sourceLineNo">061</span>     * @throws EOFException if the remote side has closed the connection in the middle of a message<a name="line.61"></a>
<span class="sourceLineNo">062</span>     */<a name="line.62"></a>
<span class="sourceLineNo">063</span>    public MsrpMessage readMsrpMessage() throws IOException {<a name="line.63"></a>
<span class="sourceLineNo">064</span>        while (true) {<a name="line.64"></a>
<span class="sourceLineNo">065</span>            final int b = this.read();<a name="line.65"></a>
<span class="sourceLineNo">066</span>            if (b == -1) {<a name="line.66"></a>
<span class="sourceLineNo">067</span>                if (!this.parser.isBetweenMessages())<a name="line.67"></a>
<span class="sourceLineNo">068</span>                    throw new EOFException("truncated message");<a name="line.68"></a>
<span class="sourceLineNo">069</span>                return null;<a name="line.69"></a>
<span class="sourceLineNo">070</span>            }<a name="line.70"></a>
<span class="sourceLineNo">071</span>            final MsrpMessage result = this.parser.inputMessageByte((byte)b);<a name="line.71"></a>
<span class="sourceLineNo">072</span>            if (result != null)<a name="line.72"></a>
<span class="sourceLineNo">073</span>                return result;<a name="line.73"></a>
<span class="sourceLineNo">074</span>        }<a name="line.74"></a>
<span class="sourceLineNo">075</span>    }<a name="line.75"></a>
<span class="sourceLineNo">076</span>}<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>




























































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